cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A198198 E.g.f. satisfies: A(x) = ( exp(x*A(x)) + exp(x*A(-x)) )/2.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 25
5 216
6 1561
7 19328
8 225681
9 3790720
10 54595921
11 1141489152
12 20620975849
13 519551642624
14 11074307974185
15 325796967940096
16 8068953248603809
17 271784019897188352
18 7647972455738262817
19 290140183695205990400
20 9154902981606486123321

List of values

[1, 1, 1, 4, 25, 216, 1561, 19328, 225681, 3790720, 54595921, 1141489152, 20620975849, 519551642624, 11074307974185, 325796967940096, 8068953248603809, 271784019897188352, 7647972455738262817, 290140183695205990400, 9154902981606486123321]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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